Max: that's a very logical and astute post. +Rep (although I've found in the past that the system does not always allow me… P.S. To Max: Once again, the system does not comply with my intent. What a shame it is so limited… Tyre vibration, Captain? Precisely equal on both rears? Yeah, why didn't I think of that? … ()
Yeah, apparently I've got to spread the 'rep' too... But I don't even know that many people on the forum... I think I must have repped everyone now...
Perhaps so! – Especially if you take the next logical step by pondering how such synchronised "vibration" might be caused… Whatever the answer really is, it would appear to be a rather convenient to have such an idealised limit of slip*.- - -o0o- - - *Maximum traction occurs at approximately to 10% -15% wheel-slip, depending upon tyre compound and its optimal operating temperatures. For instance, if the rolling circumference of a tyre is a metre, with no wheel-spin it will rotate ten times to cover a surface distance of ten metres. However, this gives slightly less than maximum traction because it does not fully exploit the tyre's inherent characteristics, including its flexibility. So, if a tyre's contact surface goes round slightly quicker to achieve this optimum traction (something in the order of 11–11.5 times in our example), it will tend to leave evidence on the track. And if track evidence suggests some jerkiness to the spin, one must ask how such spin can be so similar on both driving wheels at the same time… The 'jerkiness' is circumstantial evidence, suggesting some kind of monitoring and limiting of wheel-spin, because just the tiniest bit too much will degenerate into massive wheel-spin very suddenly, with a corresponding loss of traction. But of course, this is only circumstantial evidence; not proof…
I've no idea what it is, but it's not equal both sides, if anything it appears to alternate but the left tyres appear to have spent more time spinning that the right. It would be interesting to see a birds eye view of the grid, if they are using traction control that's where it would be most obvious.
Pulsing Kers woud be pointless. Having +/- 80bhp spikes in horsepower would not optimise traction. I think traction control can be ruled out simply because you'd hear it.
Ha! I noticed it was not precisely the same but wanted to avoid getting in this deep, so skirted around it for simplicity whilst explaning optimal tyre slip. However, since you've raised the point, AG, I will offer the three most likely explanations. Most likely and slightly technical: Notice that the car has not travelled in an precisely straight line. To accommodate turning, front and rear wheels have a differential which allows 'outer' wheels to travel further than 'inner' wheels. (If a car goes around in a circle, the inner wheels follow a tighter radius than the outers). Since it is the rear wheels which are driven, the rear differential forms part of the power train (transmission) and will deliver power very slightly unequally, depending upon how it is set up and depending on the tightness of the curve being taken. Less likely but possible â and which could add to the effect described above: If the track surface does not offer precisely the same resistance to each wheel at the point where the effect begins, it can set up a harmonic in the tyre which feeds back through the power train, causing a small oscillation; and can manifest itself in the way seen. The effect is minor but nonetheless it is there. Much less likely but still possible: The camera angle can alter one's impression slightly, particularly when perspective is compressed by the use of a long focal-length, such as is seen here, which could also account for part of what is noticed. However, the two previous points are direct physical mechanisms by which a genuine difference can occur, especially the first. It is possible. Please see below. Actually, 80bhp 'spikes' are more than than enough to produce this effect! When very close to the limit, it requires only a tiny bit more power to cause the necessary slip. Then again, you might consider this sentence more interesting: Is it mere coincidence that 80bhp sits bang on the money in terms of adding between 10% and 15% more power and is almost always used during the early part of acceleration where its benefit is greatest?(!)
Shock, horror! http://www.guardian.co.uk/commentisfree/2013/jun/15/tamara-ecclestone-wedding-extravanganza
Shock horror as relatively young and not awful driver is picked to do a straight line test for a back marker team Tio Ellinas will become the first Cypriot to drive a Formula 1 car when he carries out straightline testing with the Marussia team. The 21-year-old will take to the wheel of the MR02 car at the Kemble airfield tomorrow to conduct a scheduled straightline aerodynamic evaluation. Ellinas, currently leading the championship in his second GP3 season, had already secured the chance to drive a Formula 1 car when he was confirmed for this year's young driver test at Silverstone next month.
Sloooowwwww mooooooooo New side impact system to be used from next season: [video=vimeo;68370832]http://vimeo.com/68370832[/video]
Dammit BLS I just came to post that! New system looks sweet though, very impressed at the improvement compared to the current set-up.
oh, how I hope Bernie is done for tax evasion and is stripped of all his assets so I can go up to Tamara Ecclestone and say "Big Mac and large fries, please", although, tbh, I'll probably miss out the please and slap her face instead.
